IAB Backhaul Resource Allocation for Unicast-Multicast Interference
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Solution Overview
Problem
Existing 5G mobile communication systems face challenges in efficiently managing resource allocation for integrated access and backhaul (IAB) due to constrained wireless resources, leading to increased data load and interference in backhaul links.
Innovation Solution
A resource allocation method that classifies service data into unicast and multicast transmission data, allocating separate resources for each type to reduce interference and conserve wireless spectrum resources, utilizing artificial intelligence for complex scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wireless spectrum resources are used for IAB backhaul transmission, then backhaul traffic can be transmitted wirelessly to reduce wired transmission costs, but the data load on backhaul links increases and causes interference
Solution Approach 1:
The patent segments backhaul traffic into unicast traffic and multicast traffic, allocating separate time-frequency resources for each type. This segmentation allows optimized resource allocation where multicast traffic (which is more interference-prone) can be scheduled in resource blocks distinct from unicast traffic, thereby reducing overall backhaul link interference while maintaining wireless transmission benefits
Solution Approach 2:
The patent implements dynamic resource allocation where the gNB continuously monitors backhaul link conditions, traffic patterns, and interference levels to adaptively adjust resource allocation between unicast and multicast traffic. This dynamic approach enables the system to respond to changing conditions and minimize interference in real-time while maintaining efficient wireless backhaul operation
2Object-affected harmful factors
If separate resources are allocated for unicast and multicast transmission, then interference is reduced and resource usage is optimized, but resource allocation complexity increases
Solution Approach 1:
The patent divides backhaul resources into separate pools for unicast and multicast transmission, with dedicated scheduling algorithms for each. This segmentation simplifies the allocation process by treating different traffic types independently rather than managing them as a single complex resource pool, reducing overall allocation complexity while maintaining low interference
Solution Approach 2:
The patent implements resource allocation where the gNB allocates resources in a stepwise manner, first satisfying unicast traffic requirements and then allocating remaining resources to multicast traffic. This partial action approach simplifies decision-making by prioritizing critical unicast traffic while efficiently utilizing remaining capacity for multicast, reducing computational complexity
Data Source
AI summary
Provided are a resource allocation method, a device, and a storage medium. The resource allocation method applied by a first communication node includes receiving at least two resource requests forwarded by a second communication node and carrying to-be-transmitted service data; classifying the to-be-transmitted service data carried by each resource request to obtain unicast transmission data and multicast transmission data; and allocating a unicast transmission resource and a multicast transmission resource to the unicast transmission data and the multicast transmission data respectively.